Apparatus for treating sewage.



Patented ont. 3, |899.

(Application filed Nov. 26 189B.) (No Model.)

i UNITED STATES PATENT lEETCE, v

DONALD CAMERON, FREDERICK J. COMMIN, AND ARTHUR J. MARTIN, OF

- EXETER, ENGLAND.

APPARATUS FOR TREATING` SEWAGE.

SPECIFICATION forming part of Letters IPatent No. 634,427, dated October 3, 1899.

Original application filed May 2, 1898, Serial No. 679,522. Divided and this application tiled November 26, 1898. Serial No. 697,499. (No model.)

To all whom, t may] concern.:

Be it known that we, DONALD CAMERON, FREDERICK JAMES COMMIN, and ARTHUR JOHN MARTIN, subjects of the Queen of Great Britain, residing at Exeter, in the county of Devon, England, have invented new and useful Improvements in Apparatus for the Treatment of Sewage and other Liquids, (for which we have made application for Letters Patent 1o in Great Britain, No. 5,671, dated March 8, 1898; in France, No. 264,570, dated May 18, 1898; in Belgium, No. 135,680, dated May 18, 1898, and in Germany, dated May 20, 1898, and September 19, 1898,) of whvich'the following is a specification. l

This case is a division of our application, Serial No. 679,522, filed May 2, 1898.

This invention relates to means for filling and emptying tanks, filters, or other receptazo cles, which receptacles will be hereinafter referred to as filters,7J and the contents of which it is desirable to be able to discharge,v

at two or more dierent levels-as, for instance, where the filtered water has to be deli'vered upon land a part of which lies above the level of the bottom of the filter.

Ve will now proceed to describe our invention in connection with the accompanying drawings, in whichl Figure 1 is a longitudinal section, and Fig. 2 a plan view, showing an arrangement which may be employed when it is desired to discharge the effluent from the filters` at two diderent levels. y According tothe present invention we provide the lter with two or more dischargevalves, each having a pipe or passage delivering at the desired level. Il", as shown in the drawings, there are two discharge-valves 4o 1e and 1f they will be suspended from opposite ends of a lever 23, which will be carried at or near its center by a link 24, pivoted to another lever 25, preferably fixed on the shaft 6, and receiving its motion from an actuating bucket or buckets. One bucket 7 only is shown; but it will be readily understood that, if desired, a pair of buckets may be used. The Weights of the two dischargevalves 1e and 1f will be so proportioned that when the lever carrying them is lifted, if 5o there is no water over the valves, the valve 1f, delivering at the higher level, shall remain on its seat and the valve 1, delivering at the lower level, shall be lifted; but it the filter is full when the lever is lifted the pressure ot' 55 water on the lower valve 1' shall cause it to remain on its seat, so that the higher valve 1f shall be lifted and the contents of the lter escape thereby at the higher level. As the water in the filter is drawnoff the pressure 6o ou thelower valve 1e will be reduced until a point is reached at which the weight of the higher valve overcomes that of the lower valve and. the water-pressure thereon and opens the latter, discharging the remaining contents of the filter at the lower level. In the drawings we have, as already stated, shown a single bucket 7 only for actuating the lever 25 at the desired times; but it will be readily understood that we do not confine 7o ourselves to this arrangement, in which it will be seen that the bucket 7 is placed on that side of the shaft 6 opposite to the discharge-valve 1C, which will be opened by it. The rate offilling of .the bucket from well l through the pipe 9n may be regulated, if so desired. The descent of the bucket will cause the discharge of the filter and the closd ing of its supply-valve 1, which, as shown, is carried by the lever 25, on which the bucket 8o and also the discharge-valve are mounted. The reversal of this motion will be brought vabout by the overflow from another filter passing through pipe 9 into the chamber 21, in which the bucket 7 is hung, the water sur- 8 5 rounding the bucket neutralizing the weight of that in the bucket, which will ascend, the weight of the moving parts being so adjusted that the discharge-valves will fall onto their seats. As soon as the chamber 21 is full its 9o contents will be released, which may be el'- fected either by a valve connected with the lever carrying the bucket or, as shown, bya siphon 22, preferably the latter. The bucket will be' emptied at the same time by the fall- 95 ing of the Water as the discharge proceeds, which will bring into action a siphon 20, connected with the bucket, whereby the contents ot the latter will escape. ln order to prevent l, this siphon from coming` intonation when the i bucket is iirst filled, the top of the siphon will be above that of the bucket', so that no water can possibly overllow through it at that time; but when the filter Iills, the filtered effluent, rising in the descending leg of the siphon, will displace the air therein through a small air-valve 20, thus charging the siphon, which will come into action as soonl as the waterin the chamber is drawn ott. It' desired, however, a pair ot' buckets mounted eitheron the same lever as that from which the lever carrying the valves is suspended or a sepa rate one operating in any suitable mannerniay be used. It will also be understood that an additional valve or valves may be worked in the same way by means ot' an additional lever or levers.

\Vhat we claim as our invention, and desire to secure by Letters Patent, is, in apparatus for the treatment of sewage or other liquids*- l. The combination with a receptacle whose contents it is desired to discharge at two or more levels, of two or more valves i'or discharging such contents at the desired levels, which valves are successively opened by the action of the discharging apparatus, substantially as specified.

2. The combination with a lever for controlling the supply and discharge of a rece li taele, of a second lever connected to the fori incr and also with valves so as to eilTect the discharge at difterentlevels, substantially as spee-iiied.

3. The combination with a receptacle whose contents it is desired to discharge at two or more levels, of two or more valves suspended from a lever or levers, and so adjusted as to weight that in the absence of pressure on them the lower valve will remain open while the upper valve or valves remain closed, but that with a certain pressure of water upon the lower valve an upper valve will open while the lower valve remains closed, substantially as specified.

4. The combination with a lever for controlling the supply and discharge of a receptacle, of a second lever connected to the former and also with valves so as to effect the discharge at different levels, the weights of the discharge-valves being so proportioned that when thedischarge lirst begins the higher l valve will be opened and remain open until 1 the level of the liquid falls to such an extent that the weight of the higher valve overcomes that of the lower one, and thus closes the former and opens the latter, substantially as specified.

DONALD CAMERON. FRED. J. COMMIN. ARTHUR J. MARTIN. itnessesz ALBERT ZELLnv, Il. E. BARTLETT. 

